/*-------------------------------------------------------------------------
 *
 * win32error.c
 *      Map win32 error codes to errno values
 *
 * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
 *
 * IDENTIFICATION
 *      src/port/win32error.c
 *
 *-------------------------------------------------------------------------
 */

#ifndef FRONTEND
#include "postgres.h"
#else
#include "postgres_fe.h"
#endif

static const struct
{
    DWORD        winerr;
    int            doserr;
}            doserrors[] =

{
    {
        ERROR_INVALID_FUNCTION, EINVAL
    },
    {
        ERROR_FILE_NOT_FOUND, ENOENT
    },
    {
        ERROR_PATH_NOT_FOUND, ENOENT
    },
    {
        ERROR_TOO_MANY_OPEN_FILES, EMFILE
    },
    {
        ERROR_ACCESS_DENIED, EACCES
    },
    {
        ERROR_INVALID_HANDLE, EBADF
    },
    {
        ERROR_ARENA_TRASHED, ENOMEM
    },
    {
        ERROR_NOT_ENOUGH_MEMORY, ENOMEM
    },
    {
        ERROR_INVALID_BLOCK, ENOMEM
    },
    {
        ERROR_BAD_ENVIRONMENT, E2BIG
    },
    {
        ERROR_BAD_FORMAT, ENOEXEC
    },
    {
        ERROR_INVALID_ACCESS, EINVAL
    },
    {
        ERROR_INVALID_DATA, EINVAL
    },
    {
        ERROR_INVALID_DRIVE, ENOENT
    },
    {
        ERROR_CURRENT_DIRECTORY, EACCES
    },
    {
        ERROR_NOT_SAME_DEVICE, EXDEV
    },
    {
        ERROR_NO_MORE_FILES, ENOENT
    },
    {
        ERROR_LOCK_VIOLATION, EACCES
    },
    {
        ERROR_SHARING_VIOLATION, EACCES
    },
    {
        ERROR_BAD_NETPATH, ENOENT
    },
    {
        ERROR_NETWORK_ACCESS_DENIED, EACCES
    },
    {
        ERROR_BAD_NET_NAME, ENOENT
    },
    {
        ERROR_FILE_EXISTS, EEXIST
    },
    {
        ERROR_CANNOT_MAKE, EACCES
    },
    {
        ERROR_FAIL_I24, EACCES
    },
    {
        ERROR_INVALID_PARAMETER, EINVAL
    },
    {
        ERROR_NO_PROC_SLOTS, EAGAIN
    },
    {
        ERROR_DRIVE_LOCKED, EACCES
    },
    {
        ERROR_BROKEN_PIPE, EPIPE
    },
    {
        ERROR_DISK_FULL, ENOSPC
    },
    {
        ERROR_INVALID_TARGET_HANDLE, EBADF
    },
    {
        ERROR_INVALID_HANDLE, EINVAL
    },
    {
        ERROR_WAIT_NO_CHILDREN, ECHILD
    },
    {
        ERROR_CHILD_NOT_COMPLETE, ECHILD
    },
    {
        ERROR_DIRECT_ACCESS_HANDLE, EBADF
    },
    {
        ERROR_NEGATIVE_SEEK, EINVAL
    },
    {
        ERROR_SEEK_ON_DEVICE, EACCES
    },
    {
        ERROR_DIR_NOT_EMPTY, ENOTEMPTY
    },
    {
        ERROR_NOT_LOCKED, EACCES
    },
    {
        ERROR_BAD_PATHNAME, ENOENT
    },
    {
        ERROR_MAX_THRDS_REACHED, EAGAIN
    },
    {
        ERROR_LOCK_FAILED, EACCES
    },
    {
        ERROR_ALREADY_EXISTS, EEXIST
    },
    {
        ERROR_FILENAME_EXCED_RANGE, ENOENT
    },
    {
        ERROR_NESTING_NOT_ALLOWED, EAGAIN
    },
    {
        ERROR_NOT_ENOUGH_QUOTA, ENOMEM
    },
    {
        ERROR_DELETE_PENDING, ENOENT
    }
};

void
_dosmaperr(unsigned long e)
{
    int            i;

    if (e == 0)
    {
        errno = 0;
        return;
    }

    for (i = 0; i < lengthof(doserrors); i++)
    {
        if (doserrors[i].winerr == e)
        {
            int            doserr = doserrors[i].doserr;

#ifndef FRONTEND
            ereport(DEBUG5,
                    (errmsg_internal("mapped win32 error code %lu to %d",
                                     e, doserr)));
#elif FRONTEND_DEBUG
            fprintf(stderr, "mapped win32 error code %lu to %d", e, doserr);
#endif
            errno = doserr;
            return;
        }
    }

#ifndef FRONTEND
    ereport(LOG,
            (errmsg_internal("unrecognized win32 error code: %lu",
                             e)));
#else
    fprintf(stderr, "unrecognized win32 error code: %lu", e);
#endif

    errno = EINVAL;
    return;
}
